MAX16955AUE+

Frequency - Switching:	220kHz ~ 1MHz
Base Part Number:	MAX16955
Supplier Device Package:	16-TSSOP-EP
Package / Case:	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Power Good
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	3.5 V ~ 36 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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MAX16955AUE+ Application field and Working Principle

The MAX16955AUE+ is classified within the PMIC - Voltage Regulators - DC DC Switching Controllers category due to its unique features and capabilities. The device specifically provides a single-stage synchronous step-down, or buck, controller that enables robust power delivery from a wide input voltage range to run ultra-low output voltages for next-generation point-of-load (POL) architectures. This power delivery is cost-effective due to its integration of both the voltage regulator (VR) controller and digital current-limit protection into a single IC package as opposed to a register transfer logic (RTL) approach that would require multiple devices and is prone to failure.The device utilizes extreme peak and valley current modes to enable efficient switching operations and ensure fast transient responses. It also boasts an impressive wide input voltage range covering 4V to 32V so that high-power applications such as automotive body electronics, cloud servers, and industrial equipment can be addressed.At its core, the MAX16955AUE+ combines a MOSFET driver along with a control logic block. A higher level scheme of the device involves a voltage reference, a peak-current comparator, a valley-current comparator, a transconductance amplifier, which serves as the error amplifier, as well as appropriate error-amplifier instances and loop-compensation resistors and capacitors.A key feature of this device is the inclusion of an internal temperature triggered adjustment circuit (TTAC) which allows for additional power capacity. To further enhance increased power, the MAX16955AUE+ includes sense resistor outputs, providing a way to measure both the output current and power rail temperatures.The integrated gate driver of the MAX16955AUE+ is quite robust, featuring an ultra-low on-state resistance and fast turn-on and turn-off switch-controlled times for improved efficiency. The device also includes an adjustable slope compensation system to minimize output ripple current and deliver smooth operation.The MAX16955AUE+ also excels in its shutdown capability, with a 16-bit I2C interface and PGOOD output to indicate proper device operation. It also has low shutdown current ideal for battery powered systems, while its wide operating temperature range allows the device to operate in extreme conditions such as automotive environments.Overall, the MAX16955AUE+ provides an optimal solution for customers looking for an integrated solution for DC-DC buck regulators that provide efficient power delivery and superior reliability in high-power applications. Its comprehensive features and capabilities, such as an extended input voltage range, integrated gate driver and sensing regulator outputs, make it a suitable solution for many demanding applications.

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